Ejector.



No. 636,953. 'Patented Nov. 14, I899. J. CHAPMAN.

EJECTUB.

(Application filed Sept. 5, i899.

' (No Model.)

gQSEPHILCHAPM/Vf any.

UNITED STATES PATENT OFFICE.

JOSEPH CHAPMAN, OF IIADDONFIELD, NEW JERSEY, ASSIGNOR TO THE WATSON & MGDANIEL COMPANY, OF PHILADELPHIA, PENNSYLVANIA;

EJECTOR'.

SPECIFICATION forming part of Letters Patent No. 636,953, dated November 14, 1899;

Application filed September 5, I899. Serial No. 729, l50. (No model.)

To aIZZ whom it may concern.-

Be it known that I, JOSEPH L. CHAPMAN, a citizen of the United States, residing at Haddonfleld, in the county of Camden and State 5 of New Jersey, have invented certain new and useful Improvements in-Ejectors; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap- Io pertains to make and use the same, reference being had to the accompanying drawings, and

to the figures of reference marked thereon, which form a part of this specification.

The object of my invention is to construct [5 a fluid-ejector of fixed parts to lift and force by means of multiple tubes within a cone and of varying length in order to present multiple forcing aperatures within and in parallel lines to the inner diameter of the cone to eject the atmospheric pressure therefrom, the tubes be ing increased in number as the cone is increased in diameter and their orifices forming increased means to eject the air from the cone in ratio to its increased capacity for holding air-pressure, so that by positive expulsion of the air in multiple jets as the cone enlarges a nearly perfect vacuum shall be formed and a constant and rapid flow of fluid be introduced into and forced from the cone and at a minimum of friction of the fluid, owing to the successive impulses exerted thereon and at different points during its passage. My ejector may be used to hasten the flow in heatingpipes, and thereby increase the circulation therein, as well as for lifting and forcing liquids.

I attain the objects of my invention by the mechanism illustrated in the accompanying drawings, in Which Figure 1 is an elevation. Fig. 2 is a vertical central section. Fig. 3 is an end view of the forcing-tubes. Fig. 4 is a side elevation of the forcing-tubes. Fig. 5 is an end view of a modification. modification.

' Similar figures of reference indicate similar parts throughout the views.

The body of my ejector is of circular form-- in part 1 parallel-sided and in part 2 conical or tapered. At the outer end of part 1 is flange 3,which is screw-threaded on its interior Fig. 6 is a side "iew of a 4. At the lower part of 1 is a neck 5, having a hexagonal termination 6, which is screwthreaded at 7, and into it is screwed lifting or suction pipe 8, which communicates to the body of fiuidto be operated upon, transferred,

or forced. The outerend of part 2 terminates in a hexagon 9, which is interiorly screw threaded at 10 and into which is screwed delivery-pipe 11. It will be readily understood that I could secure the lifting or suction and delivery pipes by coupling-nuts instead of in the manner shown, and this I do in large-sized ejectors. Screwed into thread 4 and abutting flange 3 is a cap 12, preferably of hexagonal shape on its exterior and tapped with a screwthread 13, into'w'hich is screwed fluid-pressure pipe 14:. Within the cap is formed a chamber 15, a head 16 being its inner end. At the center of the head 16 is inserted a forcing 7o tube 17, which communicates with chamber 15 and projects through the interior of part 1 and extends into the interior of conical part 2 to'near its smaller end. Surrounding tube 17 are other forcing-tubes 18, also inserted into and through head 16 and extending through the interior of part 1 and into the interior of conical part 2, parallel to the central tube 17, but to a less extent than tube 17, their outer or delivery ends stopping at line A B, which is parallel to the interior surface of the conical part 2, represented by line C D.

(See Fig. 4.) Surrounding forcing-tubes 17 18 are forcing-tubes 19, parallel to tubes 17 18 and also inserted into and through head 8 16, passing within body 1 to line A B (see Fig. 4) and just beyond opening 20 of neck 5, which communicates with the lifting or suction pipe 8.

The number of forcing-tubes to be em- 0 ployed in an ejector will depend upon the diameter and capacity of the ejector and the service in which it is designed to be employed, and I may also vary their relative lengths from that which I have shown, as such modi- 5 fication is sometimes necessary to meet the demands of varying service requirements.

In Figs. 5 and 6 I show a modification in which the central tube 17 a and all the others are secured to head 16, and all in parallel lines, the tube 17 being the longest and each surrounding tube being shortened a gradual succession of less length, as see Fig. 6 and tubes 21 22 23 24 25 26. When pipe 14 is coupled to the forcing pressure, pipe 8 coupled to the liquid storage to be ejected, lifted, or transferred, and deliverypipe 11 connected to the place of discharge, then the valve or stop cock connected to pipe 14 being opened pressure will be admitted to chamber 15 and forcedthrough force-pipes 17 18 19 and in parallel jets against as many difierent parts of the interior of conical part 2 as there are pipeswhose orifices are presented in line to project against the coned surface, and as the force is distributed and multiplied upon the surface and also diffused so thoroughly through the fluid or atmosphere contained therein the act of expelling itis quick and certain, the action is steady and powerful, and it accomplishes its work with a minimum amount of friction.

I claim 1. In an ejector, a body having an interior partly cylindricalor parallel-sided and partly coned or tapered, connection from the body to a fluid-supply and to a delivery-pipe, a fluid-pressure inlet to the body, a chamber thereto connected, and leading from the chamber to and within the coned or tapered body part, multiple forcing tubes or pipes of various lengths in parallel lines and discharging against the interior walls of the coned or tapered body part.

2. In an ejector, a body part part-1y cylindrical and partly coned having a pressureinlet, a lifting or supply inlet and a delivery outlet, pipes connected thereto, a chamber in connection with the pressure-inlet and leading therefrom, to and within the coned body part, multiple forcing tubes of different lengths grouped in parallel alinement around a central forcing-tube longer than the groups of surrounding tubes.

3. In an ejector, a body part partly cylindrical and partly coned having an entrance and an exit for fluid-flowing, a pressure-entrance opposite the fluid-exit, multiple parallel forcing-tubes of various lengths, opening at one end tothe fluid-pressure, and at the opposite end discharging within and against the cone part and toward the fluid-exit.

4. In an ejector, a body part partly cylindrical and partly coned having fluid entrance and exit orifices, and a fluid-pressure entrance having connected therewith multiple parallel forcing-tubes, in groups of different lengths and entering the coned body part at diiferent distances, the longest being at the center and each successive group being shorter than the group which it surrounds, encircles or incloses and each group exterior to the central tube discharging against the interior wall of the coned body part, their orifices being parallel to the coned interior.

5. In an ejector, a body part partly cylindrical and partly coned and means to connect thereto pipes for fluid inflow and outflow, means to introduce fluid-pressure, and connected thereto and discharging within the coned body part and discharging against its coned interior part, multiple parallel forcing-tubes, each tube being of a diiferent length.

In testimony whereof I afiix my signature in presence of two witnesses.

JOSEPH L. CHAPMAN.

Witnesses:

R. O. WRIGHT, LEWIS H. REDNER. 

